93 Np 237
Neptunium
actinide · Group 3 · Period 7
3 section(s) thin
Atomic properties
Atomic number
93
Z
Density
20.45 g/cm³
at STP
Melting point
637 °C
at 1 atm
Boiling point
4000 °C
at 1 atm
Crystal structure
orthorhombic
Electron config.
[Rn] 5f⁴ 6d¹ 7s²
Oxidation states
+3, +4, +5, +6
most common
Market data
No tradeable futures market for Np on Yahoo / Stooq. Live market data is
not available; pricing in this page is based on contract reference figures from
the source documents.
Commercial forms & specifications
| Product Form | Chemical Formula | Molecular Weight | Typical Purity | Price Range (USD/g) | Main Applications |
|---|---|---|---|---|---|
| Neptunium Metal | Np | 237.05 g/mol | 99-99.9% | $280-660 | Nuclear research, detectors |
| Neptunium Dioxide | NpO₂ | 269.05 g/mol | 99-99.5% | $220-550 | Nuclear fuel research, targets |
| Neptunium Nitrate | Np(NO₃)₄·xH₂O | 485.09 g/mol (anhydrous) | 98-99% | $180-450 | Chemical processing, separations |
| Neptunium Oxalate | Np(C₂O₄)₂·6H₂O | 521.17 g/mol | 98-99% | $200-480 | Precipitation, purification |
| Neptunium Fluoride | NpF₄ | 313.04 g/mol | 98-99% | $250-600 | Fluoride volatility processing |
| Neptunium Chloride | NpCl₄ | 378.85 g/mol | 98-99% | $240-580 | Chemical research, synthesis |
| Neptunium-237 Targets | Np (encapsulated) | 237.05 g/mol | 99.9% | $350-800 | Pu-238 production |
| Neptunium Alloys | Np-Al, Np-U | Variable | Custom | $400-1000 | Research, special applications |
Suppliers by country
🇺🇸 United States
| Organization | Product Forms | Specialties |
|---|---|---|
| Oak Ridge National Laboratory | Metal, oxide, nitrate solutions, targets | High-purity Np-237, Pu-238 production targets |
| Idaho National Laboratory | Oxide, metal, research quantities | Reprocessing, purification, isotope production |
| Savannah River Site | Oxide, solutions, targets | Large-scale processing, Pu-238 production |
🇷🇺 Russia
| Organization | Product Forms | Specialties |
|---|---|---|
| NIIAR (Dimitrovgrad) | Metal, oxide, various compounds | Isotope production, research materials |
| Mayak Production Association | Oxide, nitrate solutions | Reprocessing, separation |
🇫🇷 France
| Organization | Product Forms | Specialties |
|---|---|---|
| Orano (formerly Areva) | Oxide, nitrate solutions | Reprocessing, recovery from spent fuel |
| CEA (Marcoule) | Research quantities, various forms | R&D materials, actinide chemistry |
🇬🇧 United Kingdom
| Organization | Product Forms | Specialties |
|---|---|---|
| Sellafield Ltd | Oxide, solutions from reprocessing | Recovery from Magnox/AGR fuel |
| National Nuclear Laboratory | Research quantities | Actinide research, analytical standards |
🇯🇵 Japan
| Organization | Product Forms | Specialties |
|---|---|---|
| JAEA (Japan Atomic Energy Agency) | Oxide, research materials | Actinide research, separation technology |
Market demand by product form
| Application | Annual Demand (kg) | Market Share | Primary Form Used | Growth Rate |
|---|---|---|---|---|
| Pu-238 Production | 150-180 | 55% | Metal targets, oxide | 8.5% |
| Nuclear Research | 60-80 | 25% | Various compounds | 3.2% |
| Neutron Detection Systems | 20-25 | 8% | Metal, alloys | 5.5% |
| Chemical/Physics Research | 15-20 | 7% | Solutions, compounds | 2.8% |
| Standards & Calibration | 8-12 | 4% | Certified solutions | 1.5% |
| Other/Classified | 2-5 | 1% | Various | Variable |
Moles per kilogram
| Product Form | Formula | MW (g/mol) | Moles/kg |
|---|---|---|---|
| Neptunium Metal | Np | 237.05 | 4.22 |
| Neptunium Dioxide | NpO₂ | 269.05 | 3.72 |
| Neptunium Tetrafluoride | NpF₄ | 313.04 | 3.20 |
| Neptunium Tetrachloride | NpCl₄ | 378.85 | 2.64 |
| Neptunium Nitrate (anhydrous) | Np(NO₃)₄ | 485.09 | 2.06 |
| Neptunium Oxalate (hydrated) | Np(C₂O₄)₂·6H₂O | 521.17 | 1.92 |
References
No citations on this page yet. References will appear here once enrichment runs.
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Coverage notes
The following sections are thin or absent in the source document for this element. They will be filled by enrichment passes (NIST atomic, OSHA/NIOSH safety, USGS / IAI environmental).
- Missing section: Raw Material Sources
- Missing section: Production Cost
- Missing section: Energy Consumption